Tattooed Teenage Alien Fighters from Beverly Hills (TTAFBH), is an American children's television series produced by DIC Entertainment.

The four central characters of the show were teens selected by a blobby alien named Nimbar to fight off the monsters sent by the evil Emperor Gorganus, who wants to conquer Earth because it is the focal point for a network of "Power Portals" that would facilitate conquest of the galaxy.

In the first episode, Nimbar recruits the four high school students and with a touch by his slimy "finger" gives them each a special tattoo based on a constellation in the celestial sphere.

The teens could then stand atop platforms called "Transo Discs" which teleports them to the scene of the monster attack and transforms them into giant, muscular, Ultraman-style, sleeveless spandex-clad "Galactic Sentinels" who wear American superheroic half-cowl masks with Power Rangers-style metal face plates that cover their nose, mouth and chin.

When their acrobatic martial arts skills were not enough, they could put their hands together in an interlocking square and form the ultimate Galactic Sentinel called Knightron.

Lechner's inexperience with the computer systems causes him to send and recall the monster repeatedly, confusing Nimbar to the point of mental regression and nearly winning the day.

The Galactic Sentinels are champions of Nimbar who can be summoned to him when the tattoos bestowed upon them flash: These are monstrous mercenaries with various abilities that Emperor Gorganus sends to Earth for various tasks.